> For the complete documentation index, see [llms.txt](https://docs.helmut.de/helmut4-releases/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.helmut.de/helmut4-releases/v4.9.1/helmut4-components/streamdesigner/wildcards/date-and-time-21/date-day.md).

# Date Day ?

With the help of this wildcard, the specification of the day of a date can be extracted. The wildcard is used in the following way: 

* {date.day.?}
* For the following input (?) --> 2020-03-01
* The output is going to be --> 01

{% hint style="warning" %}
The input format for the date should adhere to the following pattern: YYYY-MM-DD.
{% endhint %}


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